Narrow fabric loom



Aug. 25; 1931. H. BAX-DER NARROW FABRIC Loom Filed Oct... 3, 1928 2 Sheets-Sheet 1 ATTORNEYj Aug. 25, 1931.

H. BAADER 1,820,422

NARROW FABRIC LOOM Filed Oct. 5. 1928 2 Sheets-Sheet 2 JMVEZTO? ATTORNEYS 5 Wood and they Patented Aug. 25, A

UNITED j s T QES OFFICE g v HERMAN BAADER, or mounminvrmn,

DELAWARE A p p I I PENNSYLVANiA', ss enoa fro TEXTIL PATENTS CORPORATION, or ALI l'llfI'llOWNi PENNS N CO RATION] OF name FABR oon.

' Application meg oempera'mza; Serial no; 316,03

vThis invention relates to narrow v fabric looms used for making ribbonytape and the like, and the invention is concerned more particularly with mechanism for driving the 5 shuttles of such a loom. T 1 Narrow fabric looms as now commonly constructed, include a batten on Whichare 'rnounted two rows ofl'shuttles extending lengthwise ofthe batten. The shuttlesin each 10 row are driven by meansof a rack bar extend ing the length of the batten and engaging pinions mounted in the shuttle raceway's, a pair in each raceway. These 'pinions engage rack teeth formed in the bases of the shuttles and as the rack bar isre'ciprocated, thep'ine' ions oscillate andby their engagement with the shuttle teeth cause the shuttles "to pass through the sheds.- Therack bar is c'o'mmonly reciprocated by mechanism which in eludes elliptic and eccentric geari'ngs and drivingcranks connected to the rack bar by straps. a "A A I This construction has numerous objections, among them being lack of control over the shuttle resulting from lost motion in the con The shuttles andthe I ne'ctions due to Wear. 'rack bar are commonly made of wood and these parts are not only a'ifected by changes in humidity the atmosphere but in'addition they Wear rapidly andbecomeflooser This lost motion results in the shuttles reaching the ends of their throws and}? rebounding,

causing injury to the warp-ends. Another,

terlninedby the Width of the; fabric. The

objection is that the shuttles are of light swell and shri k with weather changes, causing binding in the iguidewa or looseness Which causes rattling 'and-vloss of control. Changes in atmospheric condi tions also affect the straps connecting-the t hank and the rack bar,'s-produci-ng variations inthe throw of the shuttles.-

1 A more important bjzectioiiwhichresults from the use of this construction resides in the loss of space onthe'batten Theoretically,

' 7' each shuttle in such a loom should not beisub stantiallylonger than the Width of themed, so that the shuttle Will just spahthedisltzihce between the ends of guide blocks forming aligned guideWays-on each-side of the reed.

It is necessary however, to-place the pinions, I

of which there is onenear'each end of each guideway, atsom-e distance inward from the ends of that guideway for structural reasons, and as each shuttle mustbe engaged with one pinion'at-one side of'the reed vbefore it leaves" the pinion on the other side of the reed, the shuttle-must have a length somewhat greater than the distance between the centers I of-the. pinions, softhat a continuous driving connection will be maintained. "In this old construction, the shuttles are therefore con siderably longer than the theoretical require. ment and as eachraceway must be sufiiciently long to receive the entire shuttle, it follows that thereeds have to beseparated a greater distance than would'be'necessary it the length of theshuttles could be reduced so that they lie would j'us-tspana reed. By reasonotthis spacing ofthe'reeds, thenunib er of reedsand shuttles which can be mounted "on a batten of a given length -ismuch less than the theoretical capacity of the batten, and the use of this driving mechanism for the shuttles,therefore resultsin' an inefiicient lo om r with respect to output; and the floor space inthe mill "is consequently not used to its greatest ca acity.

The shuttle motion of the present invention ove-r'comes'the objections encountered in the use of the rack and pinion drive above ole"- scribed, and thism'echanism permits the bat approaching the theoretical maximum denew mechanism also providesineans for driv ing theshu-ttles so that these shuttles are under-exact and positive control at all times l drive the shuttlespeedjmay also be great-- 11y increased. r A I ten to carry a-number of shuttles closely In a loom embodying this newmcchanism, A

the'shuttle's are mounted in upper and lower rows lengthwise of the batten and associated witheaic'hrow of shuttles isan actuator. bar

extending alongIthe-row and mounted for reciprocating and oscillating movement.

These bar-care conncctedvtogetherat the ends of the batten and are reciprocated and rocked during their reciprocating movement. Each bar is mounted so as to lie at one side of the row of shuttles between the front and rear edges thereof and each bar carries means for engaging the shuttles. These means preferably take the form of plates of quadrant form mounted rigidly on the bar, a pair for each shuttle, and the plates for each barare offset substantially 90. 7 I a slot near each end ada ted to be entered b plates and at the beginning of the shuttle movement, each shuttle is connected to the bar by a plate entering a slot at the trailing end of the shuttle. As the bar advances, each shuttle is moved through its shed and when its leading end projects from the shed, the bar is rocked to disengage the drive plate from the trailing end of the shuttle and to bring another plate in engagement with the leading end of the shuttle. This engagement continues until the shuttle has completed its throw and on the return movement the operations are reversed.

For a better understanding of the inven-. tion, reference may be had to the accompanying drawings, in which Fig. 1 is a view in front elevation of a portion of a batten embodying the invention, only a few of the shuttles being illustrated and various parts being broken away;

Figs. 2 and 3 are sectional views on the lines 22 and 33 of Fig. 1, certain of the parts being shown in end elevation; Fig. 4 is a diagrammatic view illustrating the operation of the device;

Fig. 5 is a view in perspective showing a portion of the actuator bar; and

Fig. 6 is a view similar to Fig. 1, showing a modified embodiment of the invention.

Referrin' now to the drawings, the batten is illustrated as comprising a beam 10 and an upper rail 11, these parts being con nected by straps 12 on which guide blocks 13 and 14, defining shuttle raceways in upper and lower rows, are mounted in the usual manner. Preferably, the blocks are of two kinds, the single blocks 13 extending between a pair of strap members and defining one wall. of a raceway, while the double blocks 14c);- tend across and are connected to four of the strap members, each double block forming a wall of a pair of raceways, one on each side of the space 1.5 in which a reed iii mounted.

The shuttles 10 mounted in the raceways are preferably of the construction set forth and claimed in my co-pending applicatioi'r Ser. No. 310,041, filed Oct. 3, 1928. Each shuttle consists of an open frame in which is mounted. a quill and a base plate 17 attached thereto and lying within the shuttle raceway. The frame portion of eachshuttle has a slot 18 near each end, this slot being open at both ends and having a curved bottom wall as in- Each of the shuttles has dicated at 18 in Fig. 2. The shuttles are mounted in the two rows in such manner that the shuttles in' the upper row have their slots in their upper sides and those in the lower row have their slots in their lower sides.

Disposed above the top row of shuttles and lying between the forward and rear ends of the shuttles is an actuator bar 19. This bar is mounted in brackets 20 which may be attached to a slide 21 movable in a suitable channel in the upper rail 11. ,The bar is mounted loosely in the brackets for free oscillatingmovement, but carries collars 22 on each side of each bracket so that as the slide 21 is reciprocated endwise, the rod will be carried with it. Below the lower row of shuttles is a similar bar 19 mounted in brackets 23 attached to a slide bar 24, this actuator bar also having collars 22 on each. side of each bracket, so that the rod is positively connected to the slide bar 2 1 to be moved therewith. The slide bars 21 and 24 are supported atone end in brackets 20, 23 connected to slides 25 disposed at one end of the batten. Between the slides 25 extend rods 26, and between these rods lies the end of a lever 27, which can be swung by appropriate mechanism such as that shown in Letters Patent #1,731,286, granted to me Oct. 15, 1929, to

cause the slides and the actuator bars to be reciprocated endwise during the operation of the looms.

Each actuator bar carries a plurality of pairs of elements 28, one pair for each shuttle, by which the bar can be connected to the shuttles. These elements are preferably in the form of quadrantal plates, as illustrated in Fig. 5, and the plates of each bar are offset angularly substantially 90. of plates is disposed on the actuator bar with an interval between corresponding to the intervals between slots in the opposite ends of a shuttle. At its end, each bar carries a bevel pinion 29 meshing with a bevel gear 30 on astud shaft 31. iournaled in a part of a slide 25 and on the end of each. stud shaft is a fork 32 adapted to straddle a pin 33 carrying a roller 34. the pins 33 being mounted on fixed parts of the batten.

With this construction the shuttles are moved in the manner illustrated in the fragmentary view of Fig. 4, in which a single shuttle and a part of the operating mecha- "nism therefor are illustrated. It will be understood that in the complete loom, these parts are duplicated many times, but an explanation of the operation of a single shuttle will make'cl-ear how all of the shuttles are driven. At the beginning of the shuttle movement in one direction. as for example. to the'right in Fig. 1, a shed has been formed in the warp threads passing through the reed in the space 15. The shuttle is now moved by engagement of the plate 28a in the slot at the trailing end of the shuttle and as an actuator Each pair 7 bar' is moved toward the right iticarries the shuttle with it, the leadin end of the shuttle passing into and through t 1e shed. When the leading end of the shuttle enters the raceway at the right of the reed, the actuator bar be gins to oscillate, this movement being .brought about bythe engagement of one ofthe forks 32 with'its pin 33. In the first part of such oscillation, the slots in each end oftheshuttleare engaged by plates 28, but

as a the oscillation is completed, the plate which was previously engaged with the slot in the trailing end of the shuttleis freed com pletely from'that slot, Whilethe plate 286 at the leading-end of'the shuttle completes its engagement with the slot in that end: The movement of-the shuttle to the end of'its throw is then continuedby engagement of the plate atthe leading end of .theshuttle with its slot. In the return movement of the parts,"the operations are reversed. Accordingly, each shuttle is moved by a plate 28a at without damage to the ends, the rod is rocked.

In-such movement, theplate 28a is moved to a'position shown at thebottom in Fig; 4,

, parts by which the shuttle is operatedare no injury to them can occur and'thesefn'arts where it can pass beneath the endswithout touching themQ Since the shuttle is engaged by one or the other or both plates 28 through out its throw and is thus positively connected tothe actuator bar, the "shuttle isunder complete control at all times, and cannot rebound.

when the end-of its throw Iisreached. t The kept from contact withthe warp ends'so-that may all be made of metal, so that wear takes place-only-very slowly. -Damage occurring,

due to swelling and bindingof the partsis avoided by making the guide blOckspffmtal and using shuttles of the cons'truction "'described in my application above-referred to.

in that part ofthe shnttlewh i ch take's npthe wear and moves in the guidewaysin contact with the blocks is made of fibre.

It will be seen that withthis new drive mechan i sm', each shuttle has a length only slightly greater than the distance between a pair of aligned guideways oneach'side of the reed and this excess length need 'olnly be sufii cient to insure that the leading 'enjdof t-he httl b' "td -.'.1-.'- d: b S u B may 6 sea posed adjacent the rowand extend ng length the trailing end leavesthe other guideway.

The plates 28 are-placed on th'e' i'od -a distance apart corresponding to the distance between the slots in the shuttles and each plateis opoo site" the slot in one end of the shuttle.- Due to; the fact thatthe shuttles and their. guide waysmay be of less lengthfor a gi'ven w'idth of fabric that would be required in the'case of shuttles and guideways for-the same fabric width actuated by the rack andpinion drive, a greater number ofreeds can be mount-ed on a standard size batten and therefore the productivity of the loom is increased. 5 Also by reason of the better control ofthe shut tles and the'metal construction of the driv ing parts, the shuttle. speed can 'be greatly increased, thus further increasing the loom output. 1 x In Fig 6- there is shown asligh'tly modicfied means for driving the actuator bars in which the bars are shown as mounted atone end in the brackets 0nd "23 and slides 25 reciprocated' inthe batten by any suitable means, and at their other endsithe rods enter tubesin which cam'slots 36 are formed. Each rod carri'es'a pin 37entering the slot.

With this arrangement, reciprocation of the slides 25' causes the endwise movement of the rods and-the engagementof the pins in the slots in thetubes 355causes the oscillation o i the .rodsat the proper instants. This application is a continuation in part of my co-pending 918, filed July 28,1927.

f Inaloonnthe combination of a plurality, of shuttles mounted in tworows, a pair of'bars disposed atopposite sides of the rows ing elements rigidly mountedin pairs on the barsonepalr for each shuttle, the elements application Ser. No. 208,- v

.95 of shuttles and lying between thefrontand rear ends of the shuttles, said bars being. mounted for lengthwise and oscillatin move- I ments, a plurality of pairs of 'shutt e driv 7 'ofeach'pair beingangularlyoffset, and means 1 for reciprocating the'ibars-l and oscillating them during. theiri'reciprocating movement j whereby'xeach'i shuttle is moved successively by the elements of theipairassociated with it.

y p 2. Ina" loom, the combination of a plurality of shuttlesmounted ina row, a bar-disposed at one side of the row-otshuttles and lying between the frontand rearends "of the shuttles, this bar being mounted for: lengthwise and oscillating movements, a plurality of pairs: of plates of quadrant form rigidly mounted onthe bar; aseparate pair for each shuttle,the plates of-each ipair being offset at "least 90 and; 7 means for; reciprocating the V bara-nd oscillatingit during'its reciprocating movement to cause the plates successively to engage and {drive the shuttles with, which they are associated.

a 3. In a loom,the-combinationof a plurality of shuttles .mount'edin a row, a bardiswise thereof, .a "plurality of plates rigidly V nountedin pairs on the bar, asepar-a-te pair 1 tor 'each shuttlejthese plates being ofquadrantal shape and-those of each pair being anishuttle on oscillation "of- 'thebar, andmeans 13o for reciprocating the bar and oscillating it during its reciprocation.

4. In a. loom, the combination of a batten, a plurality of shuttles mounted thereon in upper and lower rows extending lengthwise of the batten, a separate bar disposed at one side of each row of shuttles between the forward and rear ends ofthe shuttles in the rows, means rigidly carried by the bars for engaging and driving the shuttles, a connection between the bars, and means for re ciprocating the bars in unison and oscillating them during their reciprocation.

5. In a loom, the combination of a batten, a plurality of shuttles mounted thereon in upper and lower rows extending lengthwise of the batten, a separate bar disposed at one side of each row of shuttles between the forward and rear ends of the shuttles in the rows, the rows of shuttles lying between the bars, means rigidly carried by the bars for engaging and driving the shuttles, a connection between the bars, and means for reciprocating the bars in unison and oscillating them during their reciprocation.

6. In a loom, the combination of a plu rality of shuttles mounted in upper and lower rows, a separate bar disposed at one side of each row of shuttles, plates carried rigidly by the bars adapted to engage and drive the shuttles and means for reciprocating the bars in unison.

7 In a loom, the combination of a plurality of shuttles mounted in upper and lower rows, a separate bar disposed at one side of each row of shuttles, plates carried by the bars, a pair for each shuttle, these plates being rigidly mounted on the bar with the plates of each pair angularly offset and adapted'on rocking of the bars successively to engage the shuttles associated with them, and means for reciprocating the bars in unison and oscillating them during their reciprocation.

8. In a loom, the combination of a plurality of shuttles mounted in upper and lower rows, a separate bar disposed at one side of each row of shuttles, plates carried by the bars, a pair for each shuttle, these plates being rigidly mounted on the bar with the plates of each pair angularly ofiset and adapted on rocking of the bars successively to engage the shuttle associated with them, a single means for reciprocating both bars and individual means for oscillating the bars during their reciprocation.

9. In a loom, the combination of a row of shuttles, a bar extending lengthwise of the row adjacent thereto, a plurality of pairs of shuttle driving plates there being a separate pair for each shuttle mounted rigidly on the bar, these plates being of quadrantal form and those'of each pair being offset angularly, and means for reciprocating the bar and oscillating it during its reciprocation whereby each shuttle is engaged and driven 10. In a loom, the combination of a batten, a row of shuttles mounted. thereon, a bar extending lengthwise of the row adja cent thereto, a plurality of pairs of shuttle driving plates mounted rigidly on the bar there being a separate pair for each shuttle,

these plates being of quadrantal form and those of each pair being offset angularly by substantially and means for reciprocating the bar. and oscillating it during its reciprocation through 180, to render the plates successively efiective to engage and drive the shuttles.

11. In a loom, the combination of a batten, a row of shuttles mounted thereon in a row, a slide bar movable in a direction lengthwise of the row, an actuator bar connected to the slide bar to be moved lengthwise therewith, a plurality of pairs of: plates fast on the actuator bar, a separate pair for each shuttle, these plates being adapted on rocking of the actuator bar successively to engage and drive the shuttle, means operating on the slide bar for moving it and the actuator bar lengthwise of the row of shuttles, and means acting on the actuator bar for oscillating it during its endwise movement.

12. In a loom, the combination of a batten, a row of shuttles mounted thereon in a row, a slide bar movable in a direction lengthwise of the row, an actuator bar connected to the slide bar to be moved lengthwise therewith, a plurality of pairs of plates fast on the actuator bar, a separate pair for each shuttle, these plates being adapted on rocking of the actuator bar successively to engage and drive the shuttle, means operating on the slide bar for moving it and the actuator bar lengthwise of the row of shuttles, and a cam acting on the actuator bar for causing oscillation thereof during its endwise movement. 7

13. In a loom, the combination of a batten, a row of shuttles mounted thereon in a row, a slide bar movablein a direction lengthwise of the row, an actuator bar connected to the slide bar to be moved lengthwise therewith, a plurality of pairs of plates fast on the actuator bar, a separate pair for each shuttle, these plates being adapted on rocking of the actuator bar successively to engage and drive the shuttle, means operating on the slide bar for moving it and the actuator bar lengthwise of the row of shuttles, anda tubular cam into which the actuator bar projects and which operates to cause oscillation of the actuator bar during its endwise movement.

14:. In a loom, the combination of a batten, a row of shuttles mounted thereon in a row, a slide bar movable ina direction lengthwise of the row, an actuator bar supported in the slide bar for oscillation but held against endwise movement relative thereto; .a plurality of plates fast on the actuator bar for engaging and moving the shuttles there being a separate pair of plates for actuating each shuttle,

e the plates being brought alternately into action on rocking of the said bar, means forv reciprocating the slide bar, and means for oscillating the actuator bar during'reciprocation of the slide bar. i

15. In a loom, the combination of a batten, a plurality of shuttles disposed thereon in raceways for the shuttles mounted in the I batten, a bar disposed on the batten at one side of the shuttles and movable lengthwise, this bar lying in front of the plane in which the raceWays lie, means for reciprocating the bar and oscillating it during its reciprocation and means carried rigidly by the bar for engaging and driving the shuttles, there being a sepa- I rate means for driving each shuttle, these means being disposed in spaced relation and 7 being rendered alternately eflective as the bar is moved. v v V 16. In a loom, the combination of abatten, a shuttle mounted movably thereon and having a pairof recesses in one face, a bar movable lengthwise and parallel to the path of shuttle travel, thisbar lying adjacent the face 3f the shuttle in which the recesses are formed,

plates of quadrant form carried rigidly by the bar and'adapted upon movement thereof to enter the recesses in the. shuttle, there being separate plates for each shuttle, means for reciprocating the bar lengthwise, and means for rocking the bar at selected intervals inits reciprocating movement to cause the quadrant plates alternately to enter the shuttle In testimony whereof Iaffix my signature.

I BAADER. 

